
I use them in a water treatment system for outdoor heaters as they are fully insulated and do not require heat lamps. I ordered a pack and one bulb broke. Received a replacement package and it had a broken lightbulb. The first lightbulb only worked a month before it went out. I don't know if this is due to the quality of the bulbs or the conditions of the bulb being abusive in the canopy provided. They don't cost money for the use I need them for and I'll look at other options. It's too expensive to replace every month and too much hassle with blown bulbs in two packs.

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